The models used are a simple random
walk where, for each simulation step,
agents (so-called walkers) choose a random direction and step forward.
In our example, the walker can go from one model to another. That is,
we define one boundary in each model, when a walker cross that
boundary, it is sent to the other model.
The Netlogo models specifications available here
The exchanged data will be here the walkers positions (x,y) and the
walker ID. The output port of one model is linked to the input of